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R. SKINN-ER 8: R. GAINES. MACHINE FOR THE MANUFACTURE OF COMPOSITION PIPES FOR DRAINAGE.

Patent-ed Aug, 9, 1870.

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head and plunger or mm, for the ROBERT SKINNER AND RIOHARD GAINES, SAN FRANCISCO, GALI- FORNIA; SAID GAINES ASSIGNOR- TO SAID SKINNER.

Letters Patent No. 106,290, dateddugust 9, 1870.

.mpnovnmmv'r m memes r05. was mrmrec'runn or comosn'ron PIPES FOR DRAINAGE.

W The Schedule referred E0 in these Letters Patent and making part 0! the same.

To all whom it may concern.-

Be it known that we, ROBERT Sumner: and R1011 ARD' GAINES, of the city and county of San Francisco, State of California, have invented an Improved machine for the Manufacture of CompositionPipes for Drainage and other purposes; and we do hereby declare that'the following is a full, clear, and exact description of the same, referencebeing had to the accompanying drawing thereon.

The-nature of our invention relates, principally, to the direct application of steam to a pipe-machine. for raising or lifting, and lowering or forcingdown the cross. purpose of forming the pipe more expeditiously, and in a much more solid and compact'mannerthan by the ordinary methods.

and totlie letteis -marked In the drawing the figure represented is a sectional elevation of the machine.

To enab e others skilled in the art or science to make an use our invention, we will proceed to fully describ' .ts constrnctionand operation.

A represents the flask, which may be divided vertically, andconnected by. hinges, and provided with suitable clamps, so that it can be readily opened for removing the-pipe, when formed.

The top of the flask is made flaring, for feeding the material to the machine.

B is 'the cross-head, which moves on guide-rods G 0, attached to the upright posts D D ofthe machine.

A rain or plunger, E, is permanently fixed to the cross-head, which serves, as the cross-head is operated,

to force down the material or concrete used for form ing the pipe in a solid and compact manner.

The core F passes through the cross-head to the bottom or lower'end of the flask, and is caused to constantly revolve by suitable appliances not hereinshown.

The piston-rods G G are directly attached tothe cross-head inside of the guide-rods, and the cylinders are permanently fixed to the upright posts.

Steam is applied direct to the cylinders G G from the boiler, which causes the cross-head to move up and down in a rapid manner, carrying with it'thc plunger or ram, which forces down the concrete or material used in the manufacture of the pipe until the desired length is obtained, when the flask is opened. and the pipe so formedre noved.

Inour experience infli manufacture of pipes, we have found it impossible, especially when using bituniinous material, to successfully construct a perfect ,pipe without a rapid movement of the machinery employed, for the reason thatthe material sets so quickly. But by the use of this. machine, pipes are constructed rapidly, and the product is much stronger by being more compact when set, and will stand a muchgreater in;

ternal and external pressure than when manufactured by any other machine in use.

Having thus described our invention,

What we claim, and desire to secure by Letters Patent,is I

The combination of the cylinders G G and pistonrods G G, cross-head B, and plunger or ram E of the pipe-machine, constructed, arranged, and operating substantially as herein described, and forthe purposes set forth.

In testimony whereof ivehave hereunto set ourhands seals.

ROBERT SKINN ER. F24. s.] RICHARD GAINES. n. s]

Witnesses:

O. W. M. SMITH, Issac T.'MII. L1KEN. 

